Coupling device for water-heaters, &amp;c



C. P. WADLEY. lCOUFLJNG DEVICE FIOR WATER HEATERS, SLC. APPucATsoN FILED MAR-` 27. |920.

1,398,95 Ptented Dec. 6. 1921.

TES

narran sr @Fi-*ica 'CALVIN PQ WADLEY, or BUFFALO, NEW YORK.

COUPLING- DEVICE 'FORl WATER-HEATERS, dto.

Leashes,

T o all-whom t may concern:

Be it Aknown that I, CALVIN P. W-ADLEY, a citizen of the United States, residing in Buffalo, in the county of Erie and State of New York, have -invented new and useful Improvements in `C`oupling Device for lTater-Heaters, &c:, .of which the following is aspecilicat'ion.

` This invention relates toa coupling which .is more particularly designed for use in a heat exchanging device, although the same l may also be used to advantage in other installations where a pipe or a coil within a 'chamber is connected with a pipe or conduit invention embodied in a heat exchanging device into which the heat of the steam or hot water, or other heat medium, isv transmitted -indirectly to another fluid, such as the water' of a domestic water supply. Fig; 2 is a horizontal section y taken -on line 2-2, Fig. 1.

Fig- 3 isa" vertical, section, on an enlared scale, showing my impro-ved coupling. ig.

4 is a `fragmentarysection taken on line .Similar characters of reference referto like'l'parts throughout the several views.

The heat exchangingapparatus embodying myinvention as shown in the drawings comprisesv a heating chamber which'has' an upright'cylindrical body 10, the bottom 11 of which is formed integrally. therewith, while fthe top 12 thereof, is made detachable from the body and preferably-secured thereto by'lneans of bolts 13, so as to render thel interior of the -l body accessible when required..

This lparticular' organization is designed to utilizethe heat from a steam vor hot water boiler for indirectly heatingthe water which is used in 'a household-for domestic purposes, but itis to be `understood that'any Specification of Letters Patent.

Patented Dee, e, 192i.

' Application'led. March 27, 1920. Serial No. 369,17. i

other heating medium may be employed, and 1n some cases it may also be desirable to circulate a cooling medium through' the chamber instead of a heating medium.

is employed as a. heating mediumthe same is 'conducted from the boiler by meansof a pipe 14 into an inlet opening 15 -forined on one side of the upper part of the cylindrical wall ofthe chamber .and this medium, after it has'spent itself, is returned t'o the boiler orconducted elsewhere by an outlet pipe 16 communicating with an outlet opening 17 in the bottom of the chamber.

Within the chamber is arranged a yheat exchangin r coil 18, the lower and upper ends of w ich are adapted to be connected with the lower and upper pipes' 19, 2O forming parts of the water conduit of the house or other establishment. In this particular instance, the lower pipe 1.9 may be regarded as a water supply pipe which receives a supply of fresh water from vanysuitable source While'the upper pipe 20 serves as the deliv- VeryLplpe for conducting the waterv to the varlous Xtures n'the house .which require hot water. In the operation ot this'apparatus the downward course of the Steam in the oham ber 10 causes the Water passing upwardly through the lcoil to. be heated, thereby indirectly 'transmitting the heat from the boiler to. the water which is to be used lfor domestic or other purposes without varying 'the supply of the water in the boiler or:

affecting itso'peration in any other way- The"connection between the lower and.

of the coil and the lower and upper' pipes 19, 20 of the water suppl `serv-V upper ends ice conduit is eilected by. coupling evlces structed as follows -which embody my irnprovements andare Vhen the steam or hot water from a boiler i `21, 22 represent openings or 'passages i formed in the lowerand upperparts o f'the side wall of the body 10. Around the outer side of each of these o enings is arranged an annular seat 23, pre erably of. inwardly tapering conical form. Projecting laterally v froml the outer side of the wall around eac of the openings vl2l,- 22 is an annular collar lor riin'24 which is provided with an internal screw thread'oflarger diameter than the adjacent seat 23.,

At its upper and lower ends the coil 18 is provided hollow coupling heads 25, 26, which are :munged adjacent to the inner side of the lower and upper openings 2l, 22 the chamber and are provided with in ternally screw threaded openings '27, 28, which are arranged axially in line or substantially so with said wall openings. Each oi these coupling' heads is preferably held against turning relatively to the adjacent wall opening olf the chamber by providing the outer part of each ot these coupling heads on its diametrically opposite sides with vertical retaining or guiding'laces29 which engage with the inner vertical retaining or guiding faces ot two ribs or lugslO arranged on the adjacent part of the inner side of the chamber wall on opposite sides of' the respective coupling head, as best shown in Figs. 2 and 4f.

3l and 32 represent lower and upper coupling sleeves which are arranged respectively in the `lower and upper openings 21,` 22 ofthe chamber body and serve to conneet the lower and upper sections 19', 20 of the service pipe or conduit withthelower and upper ends of the coil 18. Each of these coupling sleeves is provided at its inner end with an external screw thread which engages with the internally screw end of the respective service pipe section.-

The turning of the sleeves 31, 32 for effecting the screw connection between the same and the coupling heads ofthe coil is preferably effected lby providing these sleeves with internal wrench lugs 33 which are adapted to receive a wrench ofv appropriatev construction lfor this purpose so that these sleeves may be connected with the coupling heads from the exterior of the heating chamber. 0n the central or intermediate part oi each of these coupling sleeves the same is providedvexternally with an inwardly facing bearing shoulder 34 which engages with the conical seat 23 around the adjacent opening lin the chamber wall. v This shoulder 34 is preferably of rounded form so that, in effect, 1t produces a section of a ball which upon engaging with the seat 23 permits the sleeve to rock upon the seat in the manner of alball and socket joint and thus enables vthe sleeve to rock and adjust itself while in its seat and adapt the sleeve to the parts with which the saine is associated.

@n the intermediate or central part ofthe sleeve the same is also provided externally, i

outside of the shoulder 34, with an outwardly facing1 abrupt shoulder 35. rlhe latter is engaged by the inner end of a clamp-` the collar The outer end ci this clarnping ring is provided with an external liange 3i, the peripherv ot which is prelierablyjy the coupling sleeve, theinner shoulder 34:`

of the latter is caused to bear firmly against the seat 23 of the chamber wall and thereby produce a lealcproof joint between the couplin sleeve and the chamber wall. The

uncouplmg of the connection between ther external pipes 19 and 2O and the coil 18 may be effected by unscrewing the clamping rin 36. p l

goth the operations of coupling and uncoupling the service pipe sections and the coil can therefore be effected *from the. ex-

terior of the chamber yery easily and conveniently and in a manner which does not involve an undue number of parts and insures a perfectlyy tight joint between the chamber and the coupling device.

I claim as my invention: j

l. A chamber having its wall provided with an opening and an outer seat around the outer side of theopening, a coupling head arranged within the chamber, a coupling sleeve having a screw connection between its inner end and said head and provided with an inwardly v facing shoulder `engaging said seat, and an outwardly i'aclng shoulder, and a. clamping ring engaging said outwardly facing shoulder and having a screw connection with said wall.

2. A chamber having its wall provided with an opening, an annularseat around the outer side of said opening and an internally screw threaded collar around said seat, a coupling head arranged within said chamber and having an internallyscrew threaded opening, a coupling sleeve provided between its ends with an annular external inwardly facing rounded shoulder which engages with said seat on the chamber wall, an external screw thread on vits inner end engaging withjthe internal thread of saidcoupling head and an outwardly facing shoulder on its outer part, and adapted to be connected at its outer end with a pipe, and aclamping ring engaging its inner end sleeve and having an external screw thread said collar.

3. A chamber having an inlet and an outlet, upper and lower openings in the upper and lower parts of its side wally and seats around the outer side of said openings, a coil arranged in said chamber and provided with upper and lower coupling heads arengaging with theinternal screw thread of Lacasse B ranged oppositev said openings, respectively, 4ing external shoulder engaging said seat and avxcoupling sleeve arranged in each of said with an outwardly facing shoulder and a openings and having its inner end connected clamping ring. engaging its inner end With 10 "By a screw joint with the adjacent head of said outer shoulder and having a screw con- 5 the coil and adapted to be oonectedfat its neotionwith said wall.

outer end with a pipe, and its nternediate o I part being provided with an inwardly faQ- CALVIN P. `WADIY. 

